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Title: Fix: Refresh auth context per Streamable HTTP request by bgaidioz · Pull Request #1998 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: Fix: Refresh auth context per Streamable HTTP request by bgaidioz · Pull Request #1998 · modelcontextprotocol/python-sdk

X Title: Fix: Refresh auth context per Streamable HTTP request by bgaidioz · Pull Request #1998 · modelcontextprotocol/python-sdk

Description: The official Python SDK for Model Context Protocol servers and clients - Fix: Refresh auth context per Streamable HTTP request by bgaidioz · Pull Request #1998 · modelcontextprotocol/python-sdk

Open Graph Description: This changeset addresses issue #1250: after the MCP client refreshes its token and starts using the new one, server‑side tools still receive the old (expired) token from get_access_token(). CI fail...

X Description: This changeset addresses issue #1250: after the MCP client refreshes its token and starts using the new one, server‑side tools still receive the old (expired) token from get_access_token(). CI fail...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/1998

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og:image:altThis changeset addresses issue #1250: after the MCP client refreshes its token and starts using the new one, server‑side tools still receive the old (expired) token from get_access_token(). CI fail...
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Fix: Refresh auth context per Streamable HTTP requesthttps://github.com/modelcontextprotocol/python-sdk/pull/1998#top
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Feb 5, 2026https://github.com/modelcontextprotocol/python-sdk/pull/1998#issue-3902079083
Please reload this pagehttps://github.com/modelcontextprotocol/python-sdk/pull/1998
#1250https://github.com/modelcontextprotocol/python-sdk/issues/1250
test code to reproduce the bughttps://github.com/raw-labs/python-sdk-issue-1250
a patchhttps://github.com/jlowin/fastmcp/pull/2505
Framework does not handle refreshed tokens correctly #1250https://github.com/modelcontextprotocol/python-sdk/issues/1250
test code provided to reproduce the bughttps://github.com/raw-labs/python-sdk-issue-1250
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Added regression testhttps://github.com/modelcontextprotocol/python-sdk/pull/1998/commits/ae8d1c1d73f9535abc8c737d9c94e5dc8358b675
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February 5, 2026 15:11https://github.com/modelcontextprotocol/python-sdk/pull/1998#event-22561736686
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February 5, 2026 16:12https://github.com/modelcontextprotocol/python-sdk/pull/1998#event-22563620119
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Feb 5, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/1998#ref-issue-3303682583
Framework does not handle refreshed tokens correctly #1250 https://github.com/modelcontextprotocol/python-sdk/issues/1250
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February 5, 2026 17:43https://github.com/modelcontextprotocol/python-sdk/pull/1998#commits-pushed-b39061f
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Set auth context per request in streamable HTTPhttps://github.com/modelcontextprotocol/python-sdk/pull/1998/commits/e571c423ac3a790fa2d0a722d8c70787d3e250b0
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May 18, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/1998#ref-pullrequest-4156293032
Fix stale auth context in stateful StreamableHTTP sessions #2363 https://github.com/modelcontextprotocol/python-sdk/pull/2363
fix: handle HTTP 4xx/5xx gracefully in StreamableHTTP transport #2199 https://github.com/modelcontextprotocol/python-sdk/pull/2199
fix: isolate streamable HTTP request errors #2607 https://github.com/modelcontextprotocol/python-sdk/pull/2607
fix: isolate streamable HTTP POST errors #2613 https://github.com/modelcontextprotocol/python-sdk/pull/2613
Surface streamable HTTP connection errors #2711 https://github.com/modelcontextprotocol/python-sdk/pull/2711
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